Year	current US$
1970	175800003.05175802
1971	203589996.33789098
1972	232509994.506836
1973	82919998.1689453
1974	50189998.626709
1975	58490001.6784668
1976	126029998.77929701
1977	93010002.1362305
1978	175610000.61035198
1979	583419982.910156
1980	952929992.675781
1981	727099975.585938
1982	647500000
1983	355859985.35156304
1984	240479995.727539
1985	180100006.10351598
1986	339959991.455078
1987	378869995.11718804
1988	287339998.72207654
1989	155260003.8144734
1990	3435230003.1278353
1991	6319450052.523994
1992	5501400008.21092
1993	5521019953.489304
1994	6327470064.16321
1995	9441179912.567144
1996	6357390007.019043
1997	5019739957.80945
1998	5952489957.809452
1999	8602429974.555971
2000	8461130050.659188
2001	7824000171.66138
2002	8883519886.016851
2003	8303859910.011295
2004	9506050085.067762
2005	4873249961.137779
2006	5910140022.277832
2007	5648739955.9021
2008	6923129980.087282
2009	7475910011.291512
2010	7066259998.321531
2011	10248940049.439669
2012	9791779972.076422
2013	8756000102.996832
2014	10142060001.373287
2015	8392490032.196053
2016	9600769960.403446
2017	9626980091.094967
2018	8053829940.795911
2019	7067189931.869507
2020	10617860145.568857
2021	9445320037.841808